--- a/NEWS Mon Dec 31 12:09:51 2012 +0100
+++ b/NEWS Mon Dec 31 12:25:11 2012 +0100
@@ -4854,7 +4854,7 @@
type and generates all solutions by prolog-style backwards proof using
the declared rules.
-This setup also deals with rules like
+This setup also deals with rules like
"is_measure f ==> is_measure (list_size f)"
@@ -5626,7 +5626,7 @@
rewrites now. That is, trace_simp_depth_limit is set to 1 by
default. Thus there is less danger of being flooded by the trace. The
trace indicates where parts have been suppressed.
-
+
* Provers/classical: removed obsolete classical version of elim_format
attribute; classical elim/dest rules are now treated uniformly when
manipulating the claset.
@@ -5665,7 +5665,7 @@
Examples are in the directory MetisExamples. WARNING: the
Isabelle/HOL-Metis integration does not yet work properly with
multi-threading.
-
+
* Command 'sledgehammer' invokes external automatic theorem provers as
background processes. It generates calls to the "metis" method if
successful. These can be pasted into the proof. Users do not have to
@@ -6031,7 +6031,7 @@
users are encouraged to use the new package.
* Method "lexicographic_order" automatically synthesizes termination
-relations as lexicographic combinations of size measures.
+relations as lexicographic combinations of size measures.
* Case-expressions allow arbitrary constructor-patterns (including
"_") and take their order into account, like in functional
@@ -6115,7 +6115,7 @@
(K x) r The K-combinator that is internally used is called K_record.
INCOMPATIBILITY: Usage of the plain update functions has to be
adapted.
-
+
* Class "semiring_0" now contains annihilation axioms x * 0 = 0 and 0
* x = 0, which are required for a semiring. Richer structures do not
inherit from semiring_0 anymore, because this property is a theorem
@@ -7011,19 +7011,19 @@
mult_neg_le now named mult_nonpos_nonpos
* The following lemmas in Ring_and_Field have been added to the simplifier:
-
+
zero_le_square
- not_square_less_zero
+ not_square_less_zero
The following lemmas have been deleted from Real/RealPow:
-
+
realpow_zero_zero
realpow_two
realpow_less
zero_le_power
realpow_two_le
abs_realpow_two
- realpow_two_abs
+ realpow_two_abs
* Theory Parity: added rules for simplifying exponents.